New research detected strong polarization from a young supernova remnant. It provided independent and solid evidence that the cosmic dust in the early universe was formed in supernovae. While it’s true that supernovae eject and destroy cosmic dust, infrared observations now suggest that the dust formed at an early stage of a supernova. SOFIA HAWC+ (Stratospheric Observatory for Infrared Astronomy High-Resolution Airborne Wideband Camera Plus) Band D observations of the young supernova remnant (SNR) Cassiopeia A (Cas A) show high polarization at the 5-30% level. This polarization indicates:
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Source: Phys.org